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mxz600 modifications

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mxz600 modifications

Postby fastline » January 1st, 2002, 8:12 am

I have a 1999 mxz600. I've read that what really works good on these sleds is to run a thicker base gasket which raises the port timing and then to mill the head so that you end up with 50-55 thou squish. However i am not sure how thick of base gasket i should use to raise the port timing. Any advise from someone who has tried this or knows of someone who has would be great.Also any other mxz600 performance tips,clutching etc would be excellent.
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mxz600 modifications

Postby thekrust » January 1st, 2002, 8:36 pm

I have a 700 and i run a .040 shim with 2 base gaskets and an aftermarket head which actually protrudes into the cylinders to get the compression back up. What a difference! It really rocks. If you do this mod be careful of the squish, .050 is not enough and under long full throttle pulls will detonate and kill it. Maintain .060 to .065 and it will prob. run forever.
For the clutching put heavier pins, it will pull alot harder, I would probably tread the hollow stock ones and add 2 set screws, I run three sets in my 700 2 shorts and one long. If you have some money to blow a roller secondary is also very good, I will never own a sled without one again...so smooth

*This Message was edited on 02-Jan-02 01:42 AM by thekrust*
Ride on!
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mxz600 modifications

Postby x-8 » January 2nd, 2002, 11:27 am

Try this .8mm base gasket,shave head back to stock compression. 287 ramps 250/380 spring 18 lbs on secondary 23/43 gearing I ran this for 2 years on my 99 600 not alot of top end but exellent in woods
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